Indicator for liquid flow



De@ 26, 1939- R. HOLMBO 2,184,643

INDICATOR FOR LIQUID FLOW l Filed July 22, 1938 Patented Dec. 26, 1939 unirse STATES 2nite f e garant ortica 2,184,643 iNDiCA'rOrv FOR LiaUiD FLOW Ralph Holmboe, Chicago, lll., assignor to H. A.

Brassert & Company, Chicago, lll.,

tion of Illinois a, Corpora- Application July 22, 1938, ,Serial No. 220,604

1 Claim.

install a series of spray nozzles in gas washers.

On account of the quality of the water usually found around steel plants, these nozzles sometimes plug up and unless some indicating means is provided the operators are unable to determine just how said nozzles are operating.

An object of the present invention is to provide an improved means for indicating whether liquid is owing through a conduit.

A further object is tO provide an indicator which is cheap1 to manufacture, simple in operation and not likely to get out of order, forindicating whether or not liquid is owing through a conduit.

A further object is to provide a device of the kind above referred to well adapted tomeet the needs of commercial operation.

The one gure of the drawing illustrates oneA embodiment of the present invention in sectional elevation.

The numeral I0 indicates a wall of a chamber which may be a gas washer. Said wall is provided with an aperture I I for the reception of a pipe I2. Interiorly of the chamber Ill the pipe is provided with an elbow I3 for holding the nozzle Ill at the desired angle. The numeral I5 indicates a ange surrounding the aperture which flange will be secured to the wall of the chamber Il), and will have associated therewith packing and clamping means, indicated as a whole by the numeral IS, for holding the pipe I2 in proper position relative to the aperture I I. Said packing and clamping means includes the clamp |60l for holding said pip-e |2 whilepermitting adjustment thereof longitudinally and circumferentially of said pipe. 'Ihe outer extremity of the pipe I2 is provided with a union Il, to which is connected the liquid supply pipe` I8.-

Disposed coaxially with the pipe i2 and union l'l is the conduit I9, which extends for a material distance from said union Il toward the nozzle end of the pipe l2.

Mounted in the outer extremity of the union |`I is the reducing plug |911, to the outer extremity of which is connected the valve 29 leading to the pipe 2|. Connected tothe supply pipe I8 is the valve 22 leading to the pip-e 23. Said pipes 2| and 23 may open to the atmosphere, or, if preierred, may be connected to a manometer (not shown). The end ofthe conduit I9 adjacent to the nozzle I4, which end is indicated bythe numeral 2li, may be drawn down slightly in size,

but the orifice from the end 24 of the pipe |9 should preferably be as large as or larger than the orifice through the valve 20. v

The mode of operation ofthe above described embodiment of the present invention `is substantially as follows. Water will be admitted through the supply pipe i8 and will be discharged through the nozzle I4. The passage of this water past the, orifice at the end 24 of the conduit I9 causes a suction within the vconduit I9 due to the velocity head of said water. If valves 29 and 22 are both open, water will flow through both of said valves and through the pipes 2| and 23. However, due to the' suction referred to, assuming equal areas of opening of the valves 2li and 22, the flow of water back through the conduit I9 and pipe 2| will be less than that through the valve 22 and pipe 23.

has no difliculty in telling by the diierence in flow from the pipes 2| and 23 if the nozzle I4 is operating properly. If the nozzle I4 should be- -come plugged, the velocity head producing suction within the conduit i9 is no longery existent and the static pressure is the same onvalve 29 as on valve 22, in which case the iiow from the 4modiiications will occur to those skilled in the art.` It is intended to cover all such modifications thatvfall within the scope of the appended claim.

What is claimed is- .In combination, a nozzle, a pipe for supplying liquid to said nozzle, a iluid supply member for Accordingly, when said valves 20 and x 22 are opened to the same extent, the operator supplying liquid to said pipe, a conduit coaxially i y disposed within said pipe, said conduit having an orifice at its end adjacent to said nozzle and a discharge outlet at the other end thereof, a discharge ,outlet connected to saidliquid supply member, and valves adapted to be opened to provide equal `discharge areas for controlling said outlets.` I

RALPH HOLMBOE. 

